Packing for stuffing-boxes.



No. 727,055. PATENTBD MAY 5, 1903.

` K. ARNOLD.

PACKING POR STUPFING BOXES.

APPL-IGATION FILED AUG. 2B. 1902.

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UNITED STATES Patented May 5, 1903.

KARL ARNOLD, OF RIGA, RUSSIA.

PACKING FOR STUFFlNG-BOXES.

SPECIFICATION forming part of Letters Patent No. 727,055, dated -May 5, 1903. Application filed August 28, 1902. Serial No. 121,351. (No model.)

To all whom it may oon/cern,.-

Be it known that I, KAEL ARNOLD, workmaster at Riga, a subject of the Emperor of Russia, residing at Asyl street 24, Riga, in thek di'erent constructions of packing according' to my invention. Fig. 4 is a side elevation,

and Fig. 5 shows a stufng-box in section,v

provided with my packings.

The core ct of the packing consists of asbestos, talc, and hemp. For this core asbestos paper is used, made half of asbestos and half of light spar. This kind of composition of the core makes it very absorbent for lubricating-oil, and therefore is preferable to a pure hemp core.

The asbestos paper in its dry state is cut into strips of any desired width, which are saturated With melted cattle tallow and an admixture of mineral cylinder oil or grease, which renders the packing more iiexible, and after being so saturated the strips are wound into rolls by machine or by hand. The core a so made is then spun over, and during this process of spinning over light spar in a dry state and graphite in' flakes and in equal quantities is added, which increases the 1ubricating capacity. After the spinning over 4o of the cover b has been effected the rolls are covered with a mixture consisting of three parts tallow and one part paraflin of low quality, and after this coating has dried they are brushed over wi th ake-graphite.

In connection with the process above described itis possible to use up in spinning asbestos threads of much shorter length and then effect a second spinning over c while allowinggraphite to run in. In consequence of this mode of manufacture the packing can be produced very cheaply in comparison with its ecacy and lubricating capacity.

In addition to the composition above de-V scribed the coremay also consist not only of asbestos paper, but also of other kinds of paperwhich are very spongy and absorbent, such as filtering-paper or soda-celluloid paper.

What I claim, and desire to secure by Letters Patelfll?, is-

vPacking for stuffing-boxes, comprising a highly-absorbent and flexible core formed of strips of asbestos paper, light spar, talc and hemp, saturated with tallow and mineral oil or grease and Wound into roll form, said core being inclosed by a spun cover incorporated with light spar and graphite in the process of spinning, and coated with a mixture of tallow and paraffin, brushed over, after drying, with iiake-graphite, substantially as described.

In Witness whereof I subscribe my signature in presence of two witnesses.

. KARL ARNOLD.

Witnesses:

K. A. PERssoUs, VI WICHMANN. 

